[0-30V PSU - prblem with current limiter]

yeah, now I checked it and now there isn't voltage regulation ;D Actually, it WAS before the LED start flashing - probably I short-circuited the Q3.

I dont have the -5,6V, so I try to replace the elements in negative supply rail.

[0-30V PSU - prblem with current limiter]

Hi all

I've got problem witch building 0-30V 0.002-3A PSU

(http://www.electronics-lab.com/projects/power/003/index.html).
Voltage regulation works fine, but there is no current limiter, U2 (TL081)is

heating and LED (D12) flashes all the time when power is on.
Semiconductors are not damaged, I checked all diodes & transistors after

soldering.

I replaced two transistors: 2N3055 for KD503 [Tesla], and 2N2219 for BD139

Please help

Thanks
mikevein, Poland